EP0339767A3 - Method and apparatus for making flakes of re-fe-b-type magnetically-aligned material - Google Patents
Method and apparatus for making flakes of re-fe-b-type magnetically-aligned material Download PDFInfo
- Publication number
- EP0339767A3 EP0339767A3 EP19890301745 EP89301745A EP0339767A3 EP 0339767 A3 EP0339767 A3 EP 0339767A3 EP 19890301745 EP19890301745 EP 19890301745 EP 89301745 A EP89301745 A EP 89301745A EP 0339767 A3 EP0339767 A3 EP 0339767A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- aligned material
- type magnetically
- making flakes
- flakes
- making
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0574—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes obtained by liquid dynamic compaction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/14—Treatment of metallic powder
- B22F1/142—Thermal or thermo-mechanical treatment
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0576—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together pressed, e.g. hot working
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Hard Magnetic Materials (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
- Powder Metallurgy (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/187,133 US4867809A (en) | 1988-04-28 | 1988-04-28 | Method for making flakes of RE-Fe-B type magnetically aligned material |
US187133 | 1988-04-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0339767A2 EP0339767A2 (en) | 1989-11-02 |
EP0339767A3 true EP0339767A3 (en) | 1990-12-12 |
EP0339767B1 EP0339767B1 (en) | 1994-04-27 |
Family
ID=22687737
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP89301745A Expired - Lifetime EP0339767B1 (en) | 1988-04-28 | 1989-02-23 | Method and apparatus for making flakes of RE-Fe-B-type magnetically-aligned material |
Country Status (7)
Country | Link |
---|---|
US (1) | US4867809A (en) |
EP (1) | EP0339767B1 (en) |
JP (1) | JPH0791570B2 (en) |
KR (1) | KR910009299B1 (en) |
CN (1) | CN1019062B (en) |
CA (1) | CA1317203C (en) |
DE (1) | DE68914875T2 (en) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATE106599T1 (en) * | 1988-10-17 | 1994-06-15 | Philips Nv | PROCESS FOR MAKING A PERMANENT MAGNET. |
JP2596835B2 (en) * | 1989-08-04 | 1997-04-02 | 新日本製鐵株式会社 | Rare earth anisotropic powder and rare earth anisotropic magnet |
US4990876A (en) * | 1989-09-15 | 1991-02-05 | Eastman Kodak Company | Magnetic brush, inner core therefor, and method for making such core |
US5240513A (en) * | 1990-10-09 | 1993-08-31 | Iowa State University Research Foundation, Inc. | Method of making bonded or sintered permanent magnets |
WO1992005902A1 (en) * | 1990-10-09 | 1992-04-16 | Iowa State University Research Foundation, Inc. | Environmentally stable reactive alloy powders and method of making same |
US5242508A (en) * | 1990-10-09 | 1993-09-07 | Iowa State University Research Foundation, Inc. | Method of making permanent magnets |
US5368657A (en) * | 1993-04-13 | 1994-11-29 | Iowa State University Research Foundation, Inc. | Gas atomization synthesis of refractory or intermetallic compounds and supersaturated solid solutions |
AU6733196A (en) * | 1995-08-30 | 1997-03-19 | Danfoss A/S | Method of producing magnetic poles on a base member, and rotor of an electrical machine |
US8603213B1 (en) | 2006-05-08 | 2013-12-10 | Iowa State University Research Foundation, Inc. | Dispersoid reinforced alloy powder and method of making |
US7699905B1 (en) | 2006-05-08 | 2010-04-20 | Iowa State University Research Foundation, Inc. | Dispersoid reinforced alloy powder and method of making |
US9347117B2 (en) * | 2007-02-27 | 2016-05-24 | Yonsei University | Nd-based two-phase separation amorphous alloy |
JP5640946B2 (en) * | 2011-10-11 | 2014-12-17 | トヨタ自動車株式会社 | Method for producing sintered body as rare earth magnet precursor |
CN102436887B (en) * | 2011-12-19 | 2015-05-27 | 钢铁研究总院 | Anisotropic nano-crystalline composite permanent magnetic material and preparation method thereof |
CN102623166B (en) * | 2012-04-17 | 2013-11-20 | 江苏大学 | Preparation method for high performance as cast condition neodymium iron boron magnet |
CN111986912B (en) * | 2020-08-24 | 2022-02-08 | 昆山磁通新材料科技有限公司 | Amorphous soft magnetic powder core and preparation method and application thereof |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0231620A2 (en) * | 1986-01-29 | 1987-08-12 | General Motors Corporation | Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4496395A (en) * | 1981-06-16 | 1985-01-29 | General Motors Corporation | High coercivity rare earth-iron magnets |
JPS59118804A (en) * | 1982-12-27 | 1984-07-09 | Hitachi Metals Ltd | Manufacture of fe-cr-co magnet alloy powder |
US4684406A (en) * | 1983-05-21 | 1987-08-04 | Sumitomo Special Metals Co., Ltd. | Permanent magnet materials |
US4597938A (en) * | 1983-05-21 | 1986-07-01 | Sumitomo Special Metals Co., Ltd. | Process for producing permanent magnet materials |
US4601875A (en) * | 1983-05-25 | 1986-07-22 | Sumitomo Special Metals Co., Ltd. | Process for producing magnetic materials |
CA1236381A (en) * | 1983-08-04 | 1988-05-10 | Robert W. Lee | Iron-rare earth-boron permanent magnets by hot working |
JPS6333801A (en) * | 1986-07-28 | 1988-02-13 | Mitsubishi Metal Corp | Nd-based alloy power for manufacturing anisotropic rare earth element plastic magnet and manufacture thereof |
-
1988
- 1988-04-28 US US07/187,133 patent/US4867809A/en not_active Expired - Fee Related
-
1989
- 1989-02-20 CA CA000588755A patent/CA1317203C/en not_active Expired - Fee Related
- 1989-02-23 EP EP89301745A patent/EP0339767B1/en not_active Expired - Lifetime
- 1989-02-23 DE DE68914875T patent/DE68914875T2/en not_active Expired - Fee Related
- 1989-04-27 JP JP1106086A patent/JPH0791570B2/en not_active Expired - Lifetime
- 1989-04-28 KR KR1019890005660A patent/KR910009299B1/en not_active IP Right Cessation
- 1989-04-28 CN CN89102977A patent/CN1019062B/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0231620A2 (en) * | 1986-01-29 | 1987-08-12 | General Motors Corporation | Permanent magnet manufacture from very low coercivity crystalline rare earth-transition metal-boron alloy |
Non-Patent Citations (2)
Title |
---|
APPLIED PHYSICS LETTERS, vol. 49, no. 26, 29th December 1986, pages 1799-1801, New York, US; R.A. OVERFELT et al.: "Plasma sprayed Fe76Nd16B8 permanent magnets" * |
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 244 (E-631)[3091], 9th July 1988; & JP-A-63 033 801 (MITSUBISHI METAL CORP.)(13-02-1988) * |
Also Published As
Publication number | Publication date |
---|---|
US4867809A (en) | 1989-09-19 |
KR890016594A (en) | 1989-11-29 |
EP0339767B1 (en) | 1994-04-27 |
CN1039926A (en) | 1990-02-21 |
KR910009299B1 (en) | 1991-11-09 |
CN1019062B (en) | 1992-11-11 |
JPH0225506A (en) | 1990-01-29 |
JPH0791570B2 (en) | 1995-10-04 |
EP0339767A2 (en) | 1989-11-02 |
DE68914875T2 (en) | 1994-08-11 |
DE68914875D1 (en) | 1994-06-01 |
CA1317203C (en) | 1993-05-04 |
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